The worlds of thought and action overlap. What you think has a way of becoming true.
If you don't execute your ideas, they die.
New ideas are not born in a conforming environment.
Most burning issues generate far more heat than light.
It's difficult to get your creative juices flowing if you're always being practical, following rules, afraid to make mistakes, not looking into outside areas, or under the influence of any of the other mental locks.
If you make an error, use it as a stepping stone to a new idea you might not have otherwise discovered.